関連する実験動画

Updated: Jul 8, 2026

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
11:19

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Published on: October 21, 2016

海洋堆積物における石油炭化水素の起源

J M Hunt, J K Whelan, A Y Huc

    Science (New York, N.Y.)
    |July 18, 1980
    PubMed
    まとめ

    海洋沈殿物の分析により,ペンタンの形成経路が明らかにされています. 生物学的過程が表面で支配的であり,低温反応は枝分かれした鎖を生じ,高温破裂はまっすぐな鎖を生成する.

    さらに関連する動画

    Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids (BPCA)08:12

    Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids (BPCA)

    Published on: May 16, 2016

    Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod06:06

    Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod

    Published on: August 17, 2016

    関連する概念動画

    The Carbon Cycle01:14

    The Carbon Cycle

    Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
    Bioremediation00:46

    Bioremediation

    Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
    Green Algae01:21

    Green Algae

    Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
    Origin of Cellular Life01:24

    Origin of Cellular Life

    The origin of life on Earth is a complex and enigmatic event rooted in ancient biochemical processes and geological conditions. Experimental evidence supports the hypothesis that life began with the spontaneous formation of organic molecules such as RNA nucleotides, amino acids, and lipids under early Earth conditions. Factors like volcanic activity, intense UV radiation, and a reducing atmosphere without free oxygen likely facilitated these reactions. Hydrothermal vents on the ocean floor are...
    Origin of Photosynthesis01:26

    Origin of Photosynthesis

    Photosynthesis represents a fundamental biological process that transformed Earth's atmosphere and paved the way for complex life. Emerging roughly 3.4–3.8 billion years ago, the earliest photosynthetic organisms harnessed light energy to produce organic compounds. These anoxygenic phototrophs used electron donors like hydrogen sulfide (H₂S) or ferrous iron (Fe²⁺), rather than water, and did not release molecular oxygen (O₂) as a byproduct. Various groups, including green sulfur and purple...
    Microbial Bioremediation of Hydrocarbons01:26

    Microbial Bioremediation of Hydrocarbons

    Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...